package com.itheima.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.itheima.constant.MessageConstant;
import com.itheima.dao.MemberDao;
import com.itheima.dao.OrderDao;
import com.itheima.dao.OrderSettingDao;
import com.itheima.entity.Result;
import com.itheima.pojo.Member;
import com.itheima.pojo.Order;
import com.itheima.pojo.OrderSetting;
import com.itheima.service.OrderService;
import com.itheima.utils.DateUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;
import java.util.Map;

@Service(interfaceClass = OrderService.class)
@Transactional
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderSettingDao orderSettingDao;
    @Autowired
    private MemberDao memberDao;
    @Autowired
    private OrderDao orderDao;

    @Override
    public Result order(Map map) throws Exception {
        String orderDate = (String) map.get("orderDate");
        Date date = DateUtils.parseString2Date(orderDate);
        OrderSetting orderSetting = orderSettingDao.findByOrderDate(date);
        if (orderSetting == null) {
            //未设置
            return new Result(false, MessageConstant.SELECTED_DATE_CANNOT_ORDER);
        }
        //检查改日预约是否已满
        int number = orderSetting.getNumber();
        int reservations = orderSetting.getReservations();
        if (reservations >= number) {
            //已满
            return new Result(false, MessageConstant.ORDER_FULL);
        }

        //检查当前用户是否为会员，根据手机号判断
        String telephone = (String) map.get("telephone");
        Member member = memberDao.findByTelephone(telephone);
        //检查是否重复预约,因为会自动注册的,所以若未查到说明未预约
        if (member != null) {
            Integer id = member.getId();
            int setmealId = Integer.parseInt((String) map.get("setmealId"));
            Order order = new Order(id, date, null, null, setmealId);
            List<Order> list = orderDao.findByCondition(order);
            if (list != null && list.size() > 0) {
                //已经完成了预约，不能重复预约
                return new Result(false, MessageConstant.HAS_ORDERED);
            }
        }

            //可以预约,设置预约人数加一
            orderSetting.setReservations(orderSetting.getReservations() + 1);
            orderSettingDao.editReservationsByOrderDate(orderSetting);
            int num=orderSettingDao.findByOrderDate(date).getReservations();//添加后已预约的人数
            //执行完数量加一后查看数据库,若与刚才查的值大于number则将人数减一并返回失败
            if (num>number){
                orderSettingDao.deleteReservation(date);
                return new Result(false, MessageConstant.ORDER_FULL);
            }


        //如果不是会员,添加到会员列表
        if (member == null) {
            member = new Member();
            member.setName((String) map.get("name"));
            member.setPhoneNumber(telephone);
            member.setIdCard((String) map.get("idCard"));
            member.setSex((String) map.get("sex"));
            member.setRegTime(new Date());
            memberDao.add(member);
        }

        //保存预约信息到预约表
        Order order = new Order(member.getId(),
                date,
                (String)map.get("orderType"),
                Order.ORDERSTATUS_NO,
                Integer.parseInt((String) map.get("setmealId")));
        orderDao.add(order);

        return new Result(true,MessageConstant.ORDER_SUCCESS,order.getId());
    }

    @Override
    public Map findById(Integer id) throws Exception {
        Map map = orderDao.findById4Detail(id);
        if (map!=null){
            Date orderDate = (Date) map.get("orderDate");
            map.put("orderDate",DateUtils.parseDate2String(orderDate));
        }
        return map;

    }
}
